Method for determining the ratio of PDSCH power to DMRS power and the first device

Abstract

The present application provides a method for determining a ratio of PDSCH power to DMRS power and a first device, the method comprising: a first device receives a first signaling, the first signaling comprising a first code division multiplexing CDM group number, a DMRS type and a first frequency division multiplexing parameter; the first CDM group number is the number of CDM groups in REs used for DMRS that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter for communication resources and perception resources; according to the first CDM group number, the DMRS type and the first frequency division multiplexing parameter, the ratio of PDSCH power to DMRS power is determined; thereby effectively supporting a perception and communication frequency division multiplexing scenario in a synaesthesia integration scenario, reducing the impact of introducing a perception function in an existing communication system on communication performance, and ensuring the accuracy of perception performance and communication demodulation.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method for determining a ratio of PDSCH power to DMRS power and a first device. Background Art

[0002] In the perception and communication integrated system, perception and communication are implemented in a time division multiplexing or frequency division multiplexing manner. In order to ensure the system perception performance, the perception bandwidth and transmission power will be dynamically adjusted according to indicators such as perception range, resolution, and accuracy. In the existing 5G system, the default power is all used by communication. When the terminal demodulates, it needs to demodulate according to different transmission powers, otherwise misjudgment will occur. Therefore, in the frequency division multiplexing interawareness integrated system, the dynamic adjustment of the perception bandwidth and transmission power will affect the system perception and communication modulation and demodulation performance.

[0003] In the current 5G communication system, the downlink power control methods include:

[0004] The EPRE of the Physical Downlink Shared Channel (PDSCH) is determined based on the Energy Per Resource Element (EPRE) of the Channel State Information Reference Signal (CSI-RS) and the high-level parameter (powerControlOffset). When PDSCH and DMRS are frequency-division multiplexed, the terminal indirectly obtains the DMRS EPRE by indicating the ratio of DMRS EPRE to PDSCHEPRE, and its value is related to the frequency-division multiplexing mode of PDSCH and DMRS.

[0005] In order to improve the DMRS estimation performance, the existing communication system will perform power boosting on the DMRS. The frequency division multiplexing modes of PDSCH and DMRS are different, so their corresponding power boosting factors are different.

[0006] If the perception function is introduced into the existing communication system, the relationship between perception and communication frequency division multiplexing will affect the power boosting factor, thereby affecting the ratio of PDSCH power to DMRS power. If the receiving end determines the ratio of PDSCH power to DMRS power in the existing way, it may cause demodulation errors at the receiving end. Summary of the invention

[0007] The purpose of the present application is to provide a method and a first device for determining the ratio of PDSCH power to DMRS power, so as to solve the problem that after the existing communication system introduces the perception function, the existing method for determining the ratio of PDSCH power to DMRS power may cause demodulation errors at the receiving end.

[0008] In order to solve the above problem, an embodiment of the present application provides a method for determining the ratio of physical downlink shared channel PDSCH power to demodulation reference signal DMRS power, which is performed by a first device, and the method includes:

[0009] Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a resource unit RE for DMRS that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources;

[0010] A ratio of PDSCH power to DMRS power is determined according to the first CDM group quantity, the DMRS type and the first frequency division multiplexing parameter.

[0011] The first frequency division multiplexing parameter includes:

[0012] A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the sensing signal in the RE used for the DMRS;

[0013] or,

[0014] The second indication field is used to indicate resource mapping information of the CDM groups occupied by the perception signals in the REs used for DMRS; the first device can determine the number of CDM groups occupied by the perception signals in the REs used for DMRS according to the resource mapping information.

[0015] The determining, according to the first CDM group quantity, the DMRS type, and the first frequency division multiplexing parameter, of the ratio of the PDSCH power to the DMRS power includes:

[0016] Determine the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the perception signal in the RE used for DMRS; the second number of CDM groups is the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission and cannot be used for perception signal transmission;

[0017] Determine a ratio of PDSCH power to DMRS power according to the number of the second CDM groups, the DMRS type and the first mapping table;

[0018] The first mapping table includes: a mapping relationship between the second CDM group quantity, the DMRS type, and the ratio of PDSCH power to DMRS power.

[0019] The determining the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the sensing signal in the REs used for the DMRS includes:

[0020] It is determined that the number of the second CDM groups is equal to the difference between the number of the first CDM groups and the number of CDM R groups occupied by the sensing signal in the REs used for DMRS.

[0021] The determining, according to the first CDM group quantity, the DMRS type, and the first frequency division multiplexing parameter, of the ratio of the PDSCH power to the DMRS power includes:

[0022] Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the number of CDM groups occupied by the sensing signal in the RE used for DMRS, the DMRS type, and the second mapping table;

[0023] The second mapping table includes: a mapping relationship between the first CDM group number, the CDM group number occupied by the perception signal in the RE used for DMRS, the DMRS type, and the ratio of the PDSCH power to the DMRS power.

[0024] The embodiment of the present application further provides a first device, including a processor and a transceiver, wherein the transceiver receives and sends data under the control of the processor, and the processor is configured to perform the following operations:

[0025] Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a DMRS resource unit RE that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources;

[0026] A ratio of PDSCH power to DMRS power is determined according to the first CDM group quantity, the DMRS type and the first frequency division multiplexing parameter.

[0027] The first frequency division multiplexing parameter includes:

[0028] A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the sensing signal in the RE used for the DMRS;

[0029] or,

[0030] The second indication field is used to indicate resource mapping information of the CDM groups occupied by the perception signals in the REs used for DMRS; the first device can determine the number of CDM groups occupied by the perception signals in the REs used for DMRS according to the resource mapping information.

[0031] The processor is further configured to execute the following process:

[0032] Determine the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the perception signal in the RE used for DMRS; the second number of CDM groups is the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission and cannot be used for perception signal transmission;

[0033] Determine a ratio of PDSCH power to DMRS power according to the number of the second CDM groups, the DMRS type and the first mapping table;

[0034] The first mapping table includes: a mapping relationship between the second CDM group quantity, the DMRS type, and the ratio of PDSCH power to DMRS power.

[0035] The processor is further configured to execute the following process:

[0036] It is determined that the number of the second CDM groups is equal to the difference between the number of the first CDM groups and the number of CDM R groups occupied by the sensing signal in the REs used for DMRS.

[0037] The processor is further configured to execute the following process:

[0038] Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the number of CDM groups occupied by the sensing signal in the RE used for DMRS, the DMRS type, and the second mapping table;

[0039] The second mapping table includes: a mapping relationship between the first CDM group number, the CDM group number occupied by the perception signal in the RE used for DMRS, the DMRS type, and the ratio of the PDSCH power to the DMRS power.

[0040] An embodiment of the present application also provides a first device, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for determining the ratio of PDSCH power to DMRS power as described above is implemented.

[0041] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the method for determining the ratio of PDSCH power to DMRS power as described above.

[0042] An embodiment of the present application further provides a computer program product, including computer instructions, which, when executed by a processor, implement the steps of the method for determining the ratio of PDSCH power to DMRS power as described above.

[0043] The above technical solution of the present application has at least the following beneficial effects:

[0044] The method for determining the ratio of PDSCH power to DMRS power and the first device in the embodiment of the present application, for the perception and communication frequency division multiplexing scenario, the first device determines the ratio of PDSCH power to DMRS power according to the frequency division multiplexing parameters of communication resources and perception resources, the DMR type, and the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission, thereby effectively supporting the perception and communication frequency division multiplexing scenario in the integrated synaesthesia scenario, reducing the impact of introducing the perception function in the existing communication system on the communication performance, and ensuring the accuracy of the perception performance and communication demodulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A flowchart showing a method for determining a ratio of PDSCH power to DMRS power provided in an embodiment of the present application;

[0046] Figure 2 One of the DMRS mapping diagrams of DMRS type 1 provided in the embodiment of the application is shown;

[0047] Figure 3 The second DMRS mapping diagram of DMRS type 1 provided in the embodiment of the application is shown;

[0048] Figure 4 A schematic diagram of DMRS mapping of Example 1 provided in an embodiment of the present application is shown;

[0049] Figure 5 A schematic diagram showing the structure of a first device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and advantages to be solved by the present application clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0051] like Figure 1 As shown, an embodiment of the present application provides a method for determining a ratio of a physical downlink shared channel PDSCH power to a demodulation reference signal DMRS power, which is performed by a first device, and the method includes:

[0052] Step 101, receiving a first signaling, wherein the first signaling includes a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a DMRS resource unit RE that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources;

[0053] The first CDM group number may be referred to as: Number of DMRS CDM group(s) without data, that is, REs used for DMRS cannot be used for PDSCH data transmission at the same time (without data includes sending DMRS or idling). For example, 1 means that REs of CDM group 0 do not multiplex data, 2 means that REs of CDM groups 0 and 1 do not multiplex data, and 3 means that all CDM groups 0, 1, and 2 do not multiplex data.

[0054] Optionally, the DMRS type includes the following two mapping patterns: DMRS type1 (DMRS type 1) and DMRS type2 (DMRS type 2), REs used for DMRS in DMRS type 1 include CDM group 0 and CDM group 1; REs used for DMRS in DMRS type 2 include CDM group 0, CDM group 1 and CDM group 2.

[0055] Optionally, the first signaling is radio resource control RRC signaling and / or downlink control information DCI signaling.

[0056] Step 102: Determine a ratio of PDSCH power to DMRS power according to the first CDM group quantity, the DMRS type, and the first frequency division multiplexing parameter.

[0057] The ratio of PDSCH power to DMRS power can be called the ratio of PDSCH EPRE to DMRS EPRE, or .

[0058] The first device may determine the DMRS EPRE according to the determined ratio of PDSCH EPRE to DMRS EPRE and the PDSCH EPRE indicated by the network, thereby ensuring that the first device correctly demodulates the signal.

[0059] In an embodiment of the present application, the first device is a demodulation end device; for example, in a scenario where a base station and a terminal cooperate in perception, the first device is a terminal; for another example, in a scenario where a base station and a base station cooperate in perception, the first device is a base station; no specific limitation is made here.

[0060] In at least one embodiment of the present application, the first frequency division multiplexing parameter includes: the number of CDM groups occupied by the perception signal in the RE used for DMRS.

[0061] Among them, the number of CDM groups occupied by sensing signals in REs used for DMRS can be called: Number of DMRS CDM group(s) for sensing.

[0062] As an optional embodiment, the first frequency division multiplexing parameter includes:

[0063] A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the sensing signal in the RE used for the DMRS;

[0064] or,

[0065] The second indication field is used to indicate resource mapping information of the CDM groups occupied by the perception signals in the REs used for DMRS; the first device can determine the number of CDM groups occupied by the perception signals in the REs used for DMRS according to the resource mapping information.

[0066] Optionally, the first signaling further includes: a DMRS type, for example, DMRS type 1 or DMRS type 2.

[0067] In other words, the embodiment of the present application indicates the frequency division multiplexing information of communication resources and perception resources through RRC or DCI signaling, and is specifically used to indicate the situation of the CDM group of perception and communication frequency division multiplexing.

[0068] In an optional implementation, for the scenario of cooperative perception between the base station and the terminal, new indication information is added between the base station and the terminal, such as adding a 2-bit first indication field in the DCI to indicate the frequency domain multiplexing of perception and communication. Since the base station has learned the mapping position of the perception signal, the first indication field can only carry the number of CDM groups occupied by the perception signal. When the type of DMRS is type 2 (that is, DMRS adopts type 2 mapping), such as Figure 2 As shown, the first indication field is 01, indicating that the perception signal occupies a CDM group of 1 DMRS; Figure 3 As shown, the first indication field is 10, indicating that the perception signal occupies 2 DMRS CDM groups.

[0069] In another optional implementation, for the scenario of cooperative perception between base stations, new information such as DMRS type and Number of DMRS CDM group(s) for sensing and other information are added between base stations to indicate the frequency domain multiplexing of perception and communication. Since the location of the receiving base station perceives the signal mapping position, the second indication field perception requires the receiving end to determine the number of CDM groups occupied and the location information of the occupied DMRS gruoup resources. Therefore, the second indication field needs to determine the resource mapping information of the Number of DMRS CDM group(s) for sensing and the perceived occupied CDM group, so as to facilitate the frequency division multiplexing of the communication users served by the receiving base station and the perception service, and to adjust the uplink power.

[0070] For example, when the type of DMRS exchanged between base stations is DMRS type 1, there are a total of 3 resource occupancy situations, and at least a 2-bit second indication field is required to represent the resource mapping information; when DMRS type 2 is used, there are a total of 6 resource occupancy situations, and at least a 3-bit second indication field is required to represent the resource mapping information. The receiving end (i.e., the first device) determines the value of Number of DMRS CDM group(s) for sensing based on the one-to-one correspondence between Number of DMRS CDM group(s) for sensing and the CDM group occupied by the sensing. For example, DMRS-type 1 mapping:

[0071] The second indication field is "00", corresponding to the sensing signal occupying CDM group 0, corresponding to Number of DMRS CDMgroup(s) for sensing=1;

[0072] The second indication field is "01", corresponding to the sensing signal occupying CDM group 1, corresponding to Number of DMRS CDMgroup(s) for sensing=1;

[0073] The second indication field is "10", corresponding to the sensing signal occupying CDM groups 0 and 1, corresponding to Number of DMRSCDM group(s) for sensing=2.

[0074] In the embodiment of the present application, the protocol stipulates the mapping relationship between the ratios of two sets of PDSCH EPRE and DMRS EPRE, and the communication mode applies the existing mapping relationship, which will not be described in detail here; the communication-aware frequency division multiplexing mode applies the new mapping relationship provided in the embodiment of the present application. The new mapping relationship provided in the embodiment of the present application is described below.

[0075] As an optional embodiment, step 102 includes:

[0076] Determine the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the perception signal in the RE used for DMRS; the second number of CDM groups is the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission and cannot be used for perception signal transmission;

[0077] Determine a ratio of PDSCH power to DMRS power according to the number of the second CDM groups, the DMRS type and the first mapping table;

[0078] The first mapping table includes: a mapping relationship between the second CDM group quantity, the DMRS type, and the ratio of PDSCH power to DMRS power.

[0079] Optionally, the second number of CDM groups may be referred to as: Number of DMRS CDM group(s) without multiplexing. Number of DMRS CDM group(s) without multiplexing is defined as indicating the number of DM-RS ports in a frequency division multiplexing system that cannot be simultaneously used for PDSCH data transmission and do not multiplex other reference signals (without multiplexing includes sending DMRS or idling or sending a perception signal), so that the first device determines the ratio of PDSCH EPRE to DMRS EPRE.

[0080] For example, the first mapping table reuses the mapping table of "Number of DMRS CDM group(s) withoutdata" and "the ratio of PDSCH EPRE to DMRS EPRE" in the prior art, and modifies the Number of DMRS CDM group(s) without data in the table to Number of DMRS CDM group(s) withoutmultiplexing, as shown in Table 1.

[0081] This mapping method can reuse a unified mapping table with the existing communication method, and the mapping relationship is simple and the complexity is low.

[0082] Table 1, the ratio of PDSCH EPRE to DMRS EPRE

[0083]

[0084] As an optional embodiment, determining the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the sensing signal in the REs used for the DMRS includes:

[0085] It is determined that the number of the second CDM groups is equal to the difference between the number of the first CDM groups and the number of CDM R groups occupied by the sensing signal in the REs used for DMRS.

[0086] In other words, an embodiment of the present application also provides a method for calculating the Number of DMRS CDM group without multiplexing, so that the first device can look up the table to determine the ratio of PDSCH EPRE to DMRSEPRE, where Number of DMRS CDM group(s) without multiplexing = Number of DMRSCDM group(s) without data - Number of DMRS CDM group(s) for sensing.

[0087] Example 1: Figure 4 As shown:

[0088] 1. RRC signaling determines that the DMRS mapping type is type 1 (type1);

[0089] 2. Check the table to determine Number of DMRS CDM group(s) without data=2;

[0090] 3. DCI signaling determines the value of Number of DMRS CDM group(s) for sensing, Number of DMRS CDM group(s) for sensing = '01';

[0091] 4. Number of DMRS CDM group(s) without multiplexing = Number of DMRS CDM group(s) without data - Number of DMRS CDM group(s) for sensing=1, look up table 1, and determine the ratio of PDSCH EPRE to DMRS EPRE=0, that is, the power boosting factor β=1.

[0092] As another optional embodiment, step 102 includes:

[0093] Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the number of CDM groups occupied by the sensing signal in the RE used for DMRS, the DMRS type, and the second mapping table;

[0094] The second mapping table includes: a mapping relationship between the first CDM group number, the CDM group number occupied by the perception signal in the RE used for DMRS, the DMRS type, and the ratio of the PDSCH power to the DMRS power.

[0095] Optionally, the second mapping table is a newly added mapping relationship table, which is applicable to the communication mode and the communication-aware frequency division multiplexing mode. The second mapping table is shown in Table 2.

[0096] Table 2, the ratio of PDSCH EPRE to DMRS EPRE

[0097]

[0098] Example 2

[0099] 1. RRC signaling determines that the DMRS mapping type is type 2 (type2);

[0100] 2. Check the table to determine Number of DMRS CDM group(s) without data=3;

[0101] 3. DCI signaling indication Number of DMRS CDM group(s) for sensing = '01';

[0102] 4. Number of DMRS CDM group(s) without data=3, Number of DMRS CDMgroup(s) for sensing=1, look up Table 2 and determine the ratio of PDSCH EPRE to DMRS EPRE=-3dB, that is, the power boosting factor β=2.

[0103] In summary, the embodiments of the present application are aimed at the perception and communication frequency division multiplexing scenario. The first device determines the ratio of PDSCH power to DMRS power based on the frequency division multiplexing parameters of communication resources and perception resources and the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission, and establishes a new mapping relationship indicating the ratio of PDSCH EPRE to DMRS EPRE, thereby effectively supporting the perception and communication frequency division multiplexing scenario in the integrated synaesthesia scenario, reducing the impact of introducing the perception function in the existing communication system on the communication performance, and ensuring the accuracy of the perception performance and communication demodulation.

[0104] like Figure 5 As shown, the embodiment of the present application further provides a first device, including a processor 500 and a transceiver 510, wherein the transceiver 510 receives and sends data under the control of the processor 500, and the processor 500 is used to perform the following operations:

[0105] Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in the resource unit RE of the DMRS that cannot be used for PDSCH data transmission, the DMRS type is used to indicate the DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication signal resources and perception signal resources;

[0106] A ratio of PDSCH power to DMRS power is determined according to the first CDM group quantity, the DMRS type and the first frequency division multiplexing parameter.

[0107] As an optional embodiment, the first frequency division multiplexing parameter includes:

[0108] A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the sensing signal in the RE used for the DMRS;

[0109] or,

[0110] The second indication field is used to indicate resource mapping information of the CDM groups occupied by the perception signals in the REs used for DMRS; the first device can determine the number of CDM groups occupied by the perception signals in the REs used for DMRS according to the resource mapping information.

[0111] As an optional embodiment, the processor is further configured to execute the following process:

[0112] Determine the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the perception signal in the RE used for DMRS; the second number of CDM groups is the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission and cannot be used for perception signal transmission;

[0113] Determine a ratio of PDSCH power to DMRS power according to the number of the second CDM groups, the DMRS type and the first mapping table;

[0114] The first mapping table includes: a mapping relationship between the second CDM group quantity, the DMRS type, and the ratio of PDSCH power to DMRS power.

[0115] As an optional embodiment, the processor is further configured to execute the following process:

[0116] It is determined that the number of the second CDM groups is equal to the difference between the number of the first CDM groups and the number of CDM R groups occupied by the sensing signal in the REs used for DMRS.

[0117] As an optional embodiment, the processor is further configured to execute the following process:

[0118] Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the number of CDM groups occupied by the sensing signal in the RE used for DMRS, the DMRS type, and the second mapping table;

[0119] The second mapping table includes: a mapping relationship between the first number of CDM groups, the number of CDM groups occupied by the perception signal in the RE used for DMRS, the DMRS type, and the ratio of the PDSCH power to the DMRS power.

[0120] The embodiment of the present application is aimed at the perception and communication frequency division multiplexing scenario. The first device determines the ratio of PDSCH power to DMRS power based on the frequency division multiplexing parameters of communication resources and perception resources and the number of CDM groups in RE used for DMRS that cannot be used for PDSCH data transmission, and establishes a new mapping relationship indicating the ratio of PDSCH EPRE to DMRS EPRE, thereby effectively supporting the perception and communication frequency division multiplexing scenario in the integrated synaesthesia scenario, reducing the impact of introducing the perception function in the existing communication system on the communication performance, and ensuring the accuracy of the perception performance and communication demodulation.

[0121] It should be noted that the first device provided in the embodiment of the present application is a device capable of executing the above-mentioned method for determining the ratio of PDSCH power to DMRS power. All embodiments of the above-mentioned method for determining the ratio of PDSCH power to DMRS power are applicable to the device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0122] An embodiment of the present application also provides a first device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, each process in the embodiment of the method for determining the ratio of PDSCH power to DMRS power as described above is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0123] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, each process in the embodiment of the method for determining the ratio of PDSCH power to DMRS power as described above is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0124] An embodiment of the present application also provides a computer program product, including computer instructions, which, when executed by a processor, implement the various processes of the method embodiment for determining the ratio of PDSCH power to DMRS power as described above, and can achieve the same technical effect. To avoid repetition, they are not repeated here.

[0125] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program codes.

[0126] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A device that specifies functions in one or more processes and / or one or more blocks.

[0127] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable storage medium produce a paper product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0128] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that the computer or other programmable device executes a series of operating steps to produce a computer-implemented process, thereby providing instructions executed on the computer or other programmable device for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0129] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining the ratio of physical downlink shared channel PDSCH power to demodulation reference signal DMRS power, characterized in that: Executed by a first device, the method includes: Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a resource unit RE for DMRS that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources; Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter; The first frequency division multiplexing parameter includes: A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the perception signal in the RE used for the DMRS; or, a second indication field, where the second indication field is used to indicate resource mapping information of a CDM group occupied by a perception signal in an RE used for DMRS; and the first device can determine the number of CDM groups occupied by the perception signal in an RE used for DMRS according to the resource mapping information; The determining, according to the first CDM group quantity, the DMRS type, and the first frequency division multiplexing parameter, a ratio of the PDSCH power to the DMRS power includes: Determine the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the perception signal in the RE used for DMRS; the second number of CDM groups is the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission and cannot be used for perception signal transmission; Determine a ratio of PDSCH power to DMRS power according to the number of the second CDM groups, the DMRS type and the first mapping table; The first mapping table includes: a mapping relationship between the second CDM group quantity, the DMRS type, and the ratio of PDSCH power to DMRS power.

2. The method according to claim 1, characterized in that The determining the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the sensing signal in the REs used for the DMRS includes: It is determined that the number of the second CDM groups is equal to the difference between the number of the first CDM groups and the number of CDM R groups occupied by the sensing signal in the REs used for DMRS.

3. A method for determining the ratio of physical downlink shared channel PDSCH power to demodulation reference signal DMRS power, characterized in that: Executed by a first device, the method includes: Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a resource unit RE for DMRS that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources; Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter; The first frequency division multiplexing parameter includes: A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the perception signal in the RE used for the DMRS; or, a second indication field, where the second indication field is used to indicate resource mapping information of CDM groups occupied by perception signals in REs used for DMRS; and the first device can determine the number of CDM groups occupied by perception signals in REs used for DMRS according to the resource mapping information; The determining, according to the first CDM group quantity, the DMRS type, and the first frequency division multiplexing parameter, a ratio of the PDSCH power to the DMRS power includes: Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the number of CDM groups occupied by the sensing signal in the RE used for DMRS, the DMRS type, and the second mapping table; The second mapping table includes: a mapping relationship between the first CDM group number, the CDM group number occupied by the perception signal in the RE used for DMRS, the DMRS type, and the ratio of the PDSCH power to the DMRS power.

4. A first device, comprising a processor and a transceiver, wherein the transceiver receives and sends data under the control of the processor, characterized in that: The processor is configured to perform the following operations: Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a DMRS resource unit RE that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources; Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter; The first frequency division multiplexing parameter includes: A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the perception signal in the RE used for the DMRS; or, a second indication field, where the second indication field is used to indicate resource mapping information of a CDM group occupied by a perception signal in an RE used for DMRS; and the first device can determine the number of CDM groups occupied by the perception signal in an RE used for DMRS according to the resource mapping information; The processor is further configured to execute the following process: Determine the second number of CDM groups according to the first number of CDM groups and the number of CDM groups occupied by the perception signal in the RE used for DMRS; the second number of CDM groups is the number of CDM groups in the RE used for DMRS that cannot be used for PDSCH data transmission and cannot be used for perception signal transmission; Determine a ratio of PDSCH power to DMRS power according to the number of the second CDM groups, the DMRS type and the first mapping table; The first mapping table includes: a mapping relationship between the second CDM group quantity, the DMRS type, and the ratio of PDSCH power to DMRS power.

5. The device according to claim 4, characterized in that The processor is also used to execute the following process: It is determined that the number of the second CDM groups is equal to the difference between the number of the first CDM groups and the number of CDM R groups occupied by the sensing signal in the REs used for DMRS.

6. A first device, comprising a processor and a transceiver, wherein the transceiver receives and sends data under the control of the processor, characterized in that: The processor is configured to perform the following operations: Receive a first signaling, the first signaling including a first code division multiplexing CDM group number, a DMRS type, and a first frequency division multiplexing parameter; wherein the first CDM group number is the number of CDM groups in a DMRS resource unit RE that cannot be used for PDSCH data transmission, the DMRS type is used to indicate a DMRS signal port mapping type, and the first frequency division multiplexing parameter is a frequency division multiplexing parameter of communication resources and perception resources; Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the DMRS type, and the first frequency division multiplexing parameter; The first frequency division multiplexing parameter includes: A first indication field, where the first indication field is used to indicate the number of CDM groups occupied by the perception signal in the RE used for the DMRS; or, a second indication field, where the second indication field is used to indicate resource mapping information of CDM groups occupied by perception signals in REs used for DMRS; and the first device can determine the number of CDM groups occupied by perception signals in REs used for DMRS according to the resource mapping information; The processor is further configured to execute the following process: Determine a ratio of PDSCH power to DMRS power according to the first CDM group number, the number of CDM groups occupied by the sensing signal in the RE used for DMRS, the DMRS type, and the second mapping table; The second mapping table includes: a mapping relationship between the first CDM group number, the CDM group number occupied by the perception signal in the RE used for DMRS, the DMRS type, and the ratio of the PDSCH power to the DMRS power.

7. A first device, comprising a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: When the processor executes the program, it implements the method for determining the ratio of the physical downlink shared channel PDSCH power to the demodulation reference signal DMRS power as described in claim 1 or 2, or when the processor executes the program, it implements the method for determining the ratio of the physical downlink shared channel PDSCH power to the demodulation reference signal DMRS power as described in claim 3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in the method for determining the ratio of the physical downlink shared channel PDSCH power to the demodulation reference signal DMRS power as described in claim 1 or 2 are implemented; or when the program is executed by a processor, the steps in the method for determining the ratio of the physical downlink shared channel PDSCH power to the demodulation reference signal DMRS power as described in claim 3 are implemented.

9. A computer program product, characterized in that The method comprises computer instructions, which, when executed by a processor, implement the steps of the method for determining the ratio of the physical downlink shared channel PDSCH power to the demodulation reference signal DMRS power as described in claim 1 or 2; or the computer instructions, when executed by a processor, implement the steps of the method for determining the ratio of the physical downlink shared channel PDSCH power to the demodulation reference signal DMRS power as described in claim 3.

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